
Paccar MX13 Fuel Injector 2010-2013: OEM 1825900PEX ( Set of 6 )
PACCAR MX13 FUEL INJECTOR 2010-2013: OEM 1825900PEX ( SET OF 6 )

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured OEX Reman Fuel Injector, OEX Reman part number 1825900RI-SET ( OEM Part Number 1825900PEX ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Paccar MX13, production years 2010-2013, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
Primary OEM | 1825900PEX |
Additional OEM | 1825900, 1825900PE, 1825900PEX, BEBJ1B00001 |
ADDITIONAL DETAILS
CONDITION | Remanufactured |
UPC / Barcode | 00840490538016 |
WEIGHT | 12.00 LBS |
SHIPPING OPTIONS
Ship Weight : 12.00 LBS
UPS Ground, 2nd Day Air, Next Day Air
SHIPPING POLICY
Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.
The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.
Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.
Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".
If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.
As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.
What is a Core Charge?
A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.
30 Day Core Charge Hold
You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.
The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.
The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.
All fluids must be drained.
If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.
Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.
The Paccar MX13 Fuel Injector Set of 6 (OEM 1825900PEX) for 2010–2013 engines offers a complete replacement solution to restore balanced fuel delivery across all cylinders. Each injector is manufactured to Paccar’s original standards, ensuring precise fuel control and dependable performance in demanding conditions. The OEM fit guarantees straightforward installation, eliminating the need for modifications. Built from high-quality materials, these injectors are engineered to handle heavy-duty use while delivering long service life. For operators replacing a full set, this kit provides the reliability and consistency needed to keep the MX13 engine running at factory standards.
FITMENT CHART
YEAR | MAKE | ENGINE(S) | ||||
---|---|---|---|---|---|---|
2010 | Paccar | MX13 | ||||
2011 | Paccar | MX13 | ||||
2012 | Paccar | MX13 | ||||
2013 | Paccar | MX13 |
PEOPLE ALSO ASKS | BLOG(S)
The OEM 1825900PEX fuel injector is engineered for Paccar MX‑13 and MX‑10 diesel engines, covering model years 2010 to 2013. This injector is designed to deliver precise fuel atomization, ensuring efficient combustion and optimal engine performance.
Key Features
- Remanufactured to OEM Standards
- Rebuilt in certified facilities using rigorous processes for reliability and durability
- Comprehensive Component Replacement
- Includes new nozzle control valve, stator, connector, and other critical wear parts, along with calibration for ideal performance
- Smart Injector with Trim Code
- Each unit is tested and assigned a proprietary trim code to ensure consistent injector dynamics and fuel delivery
- Rigorous Testing Protocols
- Validated for leaks, pressure, and timing to meet or exceed original equipment parameters
- Warranty Included
- Often comes with a 12-month unlimited-mileage warranty and offers a core return program for cost-effective replacement
- Multiple Cross-References
- Compatible with part numbers 1825900, 1825900PE, BEBJ1B00001, and 1825900PRX, simplifying cross-match of part sources
Choosing the OEM 1825900PEX injector ensures that your Paccar MX‑13 or MX‑10 engine maintains precise fuel delivery, smooth performance, and long-term reliability. Each injector is calibrated and tested to deliver consistent combustion, helping to avoid common issues like rough idle or uneven engine response. If you'd like this formatted for parts catalogs, service manuals, or internal documentation, just say the word—I’d be glad to help!
Fuel injectors play a critical role in your engine by delivering the right amount of fuel at the right time. When they’re working properly, you enjoy smooth acceleration, steady idling, and efficient fuel use. But when injectors start to fail, your vehicle can develop noticeable problems that affect drivability, fuel economy, and even long-term engine health. Knowing how to spot the signs of bad fuel injectors and how to test them can save you from costly repairs down the road.
Common Symptoms of Bad Fuel Injectors
- Engine Misfires
- Uneven fuel delivery often results in noticeable misfires or hesitation while driving.
- Rough Idle
- If one or more injectors are clogged or faulty, the engine may shake or idle unevenly.
- Poor Fuel Economy
- Faulty injectors can cause the engine to run too rich or too lean, both of which waste fuel.
- Hard Starting
- Difficulty starting after sitting for a while can be a sign of leaky or clogged injectors.
- Fuel Odor
- A leaky injector may cause fuel smells around the vehicle.
- Check Engine Light
- The ECU will often detect injector-related misfires and trigger a warning.
- Excess Smoke
- Black or white exhaust smoke may indicate improper fuel delivery.
How to Test Fuel Injectors
- Use an OBD-II Scanner
- Look for misfire or fuel trim codes that point to injector issues.
- Listen for Clicking
- A stethoscope or even a screwdriver held to the injector body can help you hear if it’s firing properly.
- Injector Balance Test
- With professional equipment, you can measure how much fuel each injector delivers.
- Fuel Pressure Test
- Check for rapid loss of fuel pressure after shutting down the engine, which can indicate a leaking injector.
- Visual Check
- Inspect for leaks, buildup, or damaged wiring at each injector.
If you suspect an injector issue, you can try a fuel system cleaner for minor clogging. For more serious problems, injectors may need to be removed for professional cleaning or replacement with OEM-quality parts. Since injectors are vital to both performance and emissions, it’s best not to delay repairs once symptoms appear.
Fuel injectors are small components with a big impact on engine performance. Recognizing the warning signs of injector failure and knowing how to test them can help you stay ahead of costly repairs and keep your vehicle running smoothly. Whether you choose a simple DIY inspection or seek professional diagnosis, staying proactive with injector health ensures better reliability, fuel economy, and peace of mind on the road.
Yes, each injector must be programmed to the engine’s ECU after installation.
Signs include rough idle, hard starting, misfires, fuel leaks, or excessive exhaust smoke.
With clean fuel and regular maintenance, these injectors can last well over 100,000 miles.
This set includes six OEM 1825900PEX injectors designed for 2010–2013 Paccar MX13 engines.